Receipts attributable to medical laboratory services performed in this state shall be thrown back and sourced to this state if, pursuant to the patient service address rule in paragraph (a) of this subsection (3): - The receipts are sourced to a state or local jurisdiction in which the taxpayer is not subject to an income or gross receipts tax (other than a general sales tax) during a given taxable year, or
- The company is subject to an income or gross receipts tax in another state or local jurisdiction but the laws of that jurisdiction do not source such receipts to that jurisdiction.
For purposes of this paragraph (b), a company shall be considered taxable in another state or local jurisdiction if it files a separate company income or gross receipts tax return in that state or local jurisdiction, it is included in a unitary or combined group income or gross receipts tax return in that state or local jurisdiction, or if the state or local jurisdiction has authority to levy an income or gross receipts tax upon the company regardless of whether that jurisdiction actually levies such a tax.